Wood Derived Composites for High Sensitivity and Wide Linear-Range Pressure Sensing
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AbstractNatural wood possesses a unique 3D microstructure containing hierarchical interconnected channels along its growth direction. This study reports a facile processing strategy to utilize such structure to fabricate carbon/silicone composite based flexible pressure sensors. The unique contribution of the multichannel structure on the sensor performance is analyzed by comparing the pressure response of the vertically cut and horizontally cut composite structures. The results show that the horizontally cut composite based sensors exhibit much higher sensitivity (10.74 kPa(-1)) and wider linear region (100 kPa, R-2 = 99%), due to their rough surface and largely deformable microstructure. Besides, the sensors also show little hysteresis and good cycle stability. The overall outstanding sensing properties of the sensors allow for accurate continuous measurement of human pulse and respiration, benefiting the real-time health signal monitoring and disease diagnoses.
Acceptance Date02/07/2018
All Author(s) ListYan Huang, Yun Chen, Xiangyu Fan, Ningqi Luo, Shuang Zhou, Shih‐Chi Chen, Ni Zhao, Ching Ping Wong
Journal nameSmall
Year2018
Month8
Day2
Volume Number14
Issue Number31
PublisherWiley: 12 months
Place of PublicationUSA
Article number1801520
ISSN1613-6810
LanguagesEnglish-United States
KeywordsPressure sensing, wearable device, wearable pressure sensor

Last updated on 2020-05-04 at 01:46